Axle so rusted need opinions on best approach

Was watching heliacoil demo while you dug that info up. I have a tap and dye set. I’ll go to harbor freight and see about extracting the bolts I broke in the morning. Surely they make a knock off of the craftsman set

I have a torch but not map gas just propane

 

One of the four bolts I snapped was related to lspv to clarify, three were shallow bolts holding on little folding fasteners that secure a brake line to the axle

 

So, I couldn’t extract the broken bolts, drilled out the holes and tied with twine, added new line clips. I was able to crack loose the nuts holding the fuel filter bracket surprisingly, I would like to replace the whole rusted bracket. Tried to locate those bolts under the carpet in the cab but couldn’t locate. Adding pics of rust as promised. Rear passenger side bolt for the bed missing, and if anyone knows if it’s possible to change the bolts out for the fuel filter bracket, let me know how. They might just be studs attached to the underside of the cab body, I’m not sure but if they are actual bolts they must be under that hard resin liner that is under the carpet. I took seat out and everything thinking I might be able to change the whole bolt, if it is a bolt. This truck needs more love than I have time to give it, going back to New England to work tomorrow…wanted to get more accomplished but it is what it is. Going to order a new fuel filter bracket since I was able to get the two nuts completely off and back on. Didn’t swap filter cuz I have to study the Haynes to figure out how to relieve fuel pressure before I attempt to crack the lines. I did prep every rusty bolt I could spray today. The bed of the truck is coming off one way or another next time I’m home. It’s not going to be easy

 

I think when they replaced the frame they reused all the rusty bolts and nuts. Those toggle looking bolts for the body look bad. Also the pic I added of the rot hole in the bed is the front corner of the passenger side. That’s the only spot that has rotted clear through. I believe I need to tear the whole truck down and replace all these rusty bolts or it won’t be possible soonish, even if it’s still possible now. The more I work on it, the more I think maybe I should sell it but I don’t want to sell.

 

Reading the Haynes trying to figure out what those bolts with oval shaped brackets coming through the body near rocker panels holds on, and if they can be replaced. I am ready to stay the course and start renovating this thing one weekend at a time if you guys think it’s even possible and worthwhile. I desire to keep this thing.